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Translated from Steklo i Keramika, No. 5, pp. 2–3, May, 1974.
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Svishchenko, A.Y. Socialist competitions — A pledge for success in the fourth year of the five-year plan. Glass Ceram 31, 303–305 (1974). https://doi.org/10.1007/BF00675838
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DOI: https://doi.org/10.1007/BF00675838